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Efzofitimod - aTyr Pharma

Drug Profile

Efzofitimod - aTyr Pharma

Alternative Names: ATY 1923; ATYR-1923; iMod.Fc; KRP-R120; Stalaris

Latest Information Update: 12 Jun 2025

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At a glance

  • Originator aTyr Pharma
  • Developer aTyr Pharma; Foundation for Sarcoidosis Research; Kyorin Pharmaceutical
  • Class Anti-inflammatories; Antifibrotics; Antirheumatics; Antivirals; Immunoglobulin Fc fragments; Proteins; Recombinant fusion proteins
  • Mechanism of Action Neuropilin-2 modulators
  • Orphan Drug Status

    Orphan designation is assigned by a regulatory body to encourage companies to develop drugs for rare diseases.

    Yes - Sarcoidosis; Systemic scleroderma
  • New Molecular Entity Yes

Highest Development Phases

  • Phase III Pulmonary sarcoidosis
  • Phase II COVID-19 pneumonia; Interstitial lung diseases
  • Preclinical Rheumatoid arthritis
  • No development reported Pulmonary fibrosis

Most Recent Events

  • 04 Jun 2025 Interim adverse events, efficacy and pharmacodynamics data from a phase II trial in Interstitial lung diseases released by aTyr Pharma
  • 13 Mar 2025 aTyr Pharma holds a Type C meeting with the US FDA to discuss the statistical analysis plan (SAP) for the phase III EFZO-FIT™ study
  • 02 Oct 2024 Efzofitimod - aTyr Pharma receives Orphan Drug status for Sarcoidosis in Japan

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